1 files changed, 136 insertions, 0 deletions
diff --git a/tests/sys/netinet/udp_dontroute.c b/tests/sys/netinet/udp_dontroute.c
new file mode 100644
index 000000000000..ba6d4ec6236c
--- /dev/null
+++ b/tests/sys/netinet/udp_dontroute.c
@@ -0,0 +1,136 @@
+/*
+ *  Copyright (c) 2014 Spectra Logic Corporation
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *  1. Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions, and the following disclaimer,
+ *     without modification.
+ *  2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *     substantially similar to the "NO WARRANTY" disclaimer below
+ *     ("Disclaimer") and any redistribution must be conditioned upon
+ *     including a substantially similar Disclaimer requirement for further
+ *     binary redistribution.
+ *
+ *  NO WARRANTY
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ *  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ *  IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGES.
+ *
+ *  Authors: Alan Somers         (Spectra Logic Corporation)
+ */
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/*
+ * Sends a single UDP packet to the provided address, with SO_DONTROUTE set
+ * I couldn't find a way to do this with builtin utilities like nc(1)
+ */
+int
+main(int argc, char **argv)
+{
+	struct sockaddr_storage dst;
+	int s, t;
+	int opt;
+	int ret;
+	ssize_t len;
+	const char* sendbuf = "Hello, World!";
+	const size_t buflen = 80;
+	char recvbuf[buflen];
+	bool v6 = false;
+	const char *addr, *tapdev;
+	const uint16_t port = 46120;
+
+	bzero(&dst, sizeof(dst));
+	if (argc < 3 || argc > 4) {
+		fprintf(stderr, "Usage: %s [-6] ip_address tapdev\n", argv[0]);
+		exit(2);
+	}
+
+	if (strcmp("-6", argv[1]) == 0) {
+		v6 = true;
+		addr = argv[2];
+		tapdev = argv[3];
+	} else {
+		addr = argv[1];
+		tapdev = argv[2];
+	}
+
+	t = open(tapdev, O_RDWR | O_NONBLOCK);
+	if (t < 0)
+		err(EXIT_FAILURE, "open");
+
+	if (v6)
+		s = socket(PF_INET6, SOCK_DGRAM, 0);
+	else
+		s = socket(PF_INET, SOCK_DGRAM, 0);
+	if (s < 0)
+		err(EXIT_FAILURE, "socket");
+	opt = 1;
+
+	ret = setsockopt(s, SOL_SOCKET, SO_DONTROUTE, &opt, sizeof(opt));
+	if (ret == -1)
+		err(EXIT_FAILURE, "setsockopt(SO_DONTROUTE)");
+
+	if (v6) {
+		struct sockaddr_in6 *dst6 = ((struct sockaddr_in6*)&dst);
+
+		dst.ss_len = sizeof(struct sockaddr_in6);
+		dst.ss_family = AF_INET6;
+		dst6->sin6_port = htons(port);
+		ret = inet_pton(AF_INET6, addr, &dst6->sin6_addr);
+	} else {
+		struct sockaddr_in *dst4 = ((struct sockaddr_in*)&dst);
+
+		dst.ss_len = sizeof(struct sockaddr_in);
+		dst.ss_family = AF_INET;
+		dst4->sin_port = htons(port);
+		ret = inet_pton(AF_INET, addr, &dst4->sin_addr);
+	}
+	if (ret != 1)
+		err(EXIT_FAILURE, "inet_pton returned %d", ret);
+
+	ret = sendto(s, sendbuf, strlen(sendbuf), 0, (struct sockaddr*)&dst,
+	    dst.ss_len);
+	if (ret == -1)
+		err(EXIT_FAILURE, "sendto");
+
+	/* Verify that the packet went to the desired tap device */
+
+	len = read(t, recvbuf, buflen);
+	if (len == 0)
+		errx(EXIT_FAILURE, "read returned EOF");
+	else if (len < 0 && errno == EAGAIN)
+		errx(EXIT_FAILURE, "Did not receive any packets");
+	else if (len < 0)
+		err(EXIT_FAILURE, "read");
+
+	/*
+	 * If read returned anything at all, consider it a success.  The packet
+	 * should be an Ethernet frame containing an ARP request for
+	 * ip_address.  We won't bother to decode it
+	 */
+	return (0);
+}